Party fears

One dare I’d like to complete this month is to host a small party. Hosting parties usually makes me feel super anxious out of all proportion – to the point that I avoid it nowadays. The thought I have is “unless it goes well I will feel AWFUL”. I know intellectually that a bad party is no big deal but in real life I’ve felt a huge amount of shame, guilt even sadness when a party hasn’t gone well – all mixed with feelings of more shame for being affected so much by something quite trivial. My thought feels “true” even after I’ve tried a Byron Katie turnaround. How can I shift towards feeling OK with hosting a B- party, a party where some people won’t show up and some people may not have a great time?